Carbureter.



C. P. ABBEY. I CAHRBUHETER. APPLICATION FILED MAR. 27, i916.

, 1,290,1(138.` Panted @11.11919 2 SHEETS-SHEET I.

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I I I n m Iluum Ml n I I I I I I I I I I I I I I I I I E I C. P. ABBEY.

CARBUREIER.

APPLICATION FILED MMU-.1916.

2 SHEETS-SHEET 2- Patented .Im 7,1919;

' errar s PATENT orrrcn.-

CHARLES P. ABBEY, OF CI'IICAGO, ILLINOIS, ASSIGNOR TO KARBAB COMPANY, OF

' CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CARBUBETER.

Specification of Letters Patent.

Patented Jan. 7, 1919.

Application led March 27, 1916. Serial N o. 86.828.

To all-whom it may concern:

Be it known that I, CHARLES P. Amref, a' citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Carbureters, of which the followino is a specification.

This invention re ates to carbureters.

The object of the invention is to provide a carbureter which shall be simple in construction, eiiicient in operation and inexpensive to manufacture as compared with any carbureter now on the market, of which I have any knowledge.

Toeii'ect these ends, a carbureter of my invention n comprises the .various features, combinations of features and details of construction hereinafter described andclaimed.

Referring now to the drawings, l

Figure 1 is a sectional elevation of my improved carbureter on the line 1-1 of Fig. 2,

Fig. 2 is a top plan view thereof showing the carbureter proper 1n section on the line 2.-2 of Fig. 1,

Figs. 8 and t are sectional plan views 0n the lines 3-3 and 4--4, respectively, of Fig. 1,

4 Fig. 5 is a perspective view of the throttle valve removed from the carbureter casing,

Figs. 6 and 7 are separate perspective views of the different parts of said throttle valves; and

Fig. 8 isa view illustrating -a carbureter embodying my invention 1n slightly modified form. i

My improved carbureter comprises anbody portion or casing, designated as a whole A, consisting preferably of a hollow cylinder 1, provided with a mixing chamocrl 2, an air admission passageway 3, and with a discharge opening 4. `Said carbureter is adapted to be connected to the manifold of an engine by means of va usual connection 5 secured to the upper end thereof.

Rotatably mounted in the carbureter casing and extending both above and below the lower end of the mixing chamber 2, 1s

a throttle valve 6. As shown, the upper end of' said throttle valve is rotatably fitted to a bearing formed by the boreof a. sleeve 7 which extends into the mixing chamber from a flange 8 which closes the lower end of said mixing chamber, and the lowcrend of said ply, as a fioat reservoir A', through a nozzle 10, which extends into the lowei` end of the hollow throttle valve 6. My invention contemplates theuse of any desired or approved form lof float reservoir and nozzle and the same need not therefore, be described in detail..

Preferable, also, a perforated bafiie 11 surrounds the discharge opening 4 of the carbureter, which will operate, in an obvious manner, to promote thorough vaporization of the hydrocarbon and a thorough inter-.

mixture of the hydrocarbon vapor and air, whereby a highly effective explosive mixture will be produced. y'

In the preferable construction shown, the sleeve 7 and the baiile 11 form a cylinder, designated as a whole 12, supported within the mixing chamber 2, substantially concentric therewith, the upper end of said cylinder being secured in the discharge opening of the carbureter and its lower end in an opening formed in the flange 8. The ends of said cylinder are open and the interior thereof is divided about midway between its'ends, by a transversepartition 13, the portion of said cylinder below said partition forming the sleeve 7 and the portion of said cylinder above said partition being perforated and forming the baiiie 11.

In use, the partition 18 will close the upper end of the throttle valve 6 and its lower end is closed by a plug or bushing 15, which is provided with a hole to receive the nozzle4 10, said hole and nozzle being substantially concentric with the throttle valve G so as not to interfere with rotation thereof.

The quantities of air and of hydrocarbon supplied 'to the carbureter, both actual and relative, and thus the richnessl of the explosive mixture, is controlled by the throttle `valve 6 in the following manner Formed with the interior ofthe throttle valve 6 when said valve is turned to bring said ports 17 and 18 into full or partial register with each other. As shown, there are two sets of ports 17 and 18 located at opposite sides of said throttle valve and also on opposite sides of the air admission opening 3 of the carbureter casing 1. In the preferable construction shown, also, the overlapping sides of each set of ports are inclined relative-to each other, whereby as said valve is turned to completely close said ports, the final port openings will be triangular in shape, thus provi ing'for a very fine adjustment of said port openings. As shown, the overlapping sides of the ports 17 in the throttle valve 6 are vthus inclined or beveled, the relation being such that said ports 17 will flare downwardly. This particular relation may, however, be varied as desired.

' Similar ports 20 and 21 are also formed inl valve casing, and usual levers'mounted on the steering post, dash, or other'part of the car, not shown, where they will be conveniently accessible to the person who is driving the car. y

` The air and hydrocarbon supplied to the carbureter is controlled primarily by the throttle valve 6, while the adjustable sleeve 9 is designed for varying the extent of opening of the valve ports 17 and 18 as compared with the extent of openingof the valve ports 20 and 21, whereby the quantity of air supplied to the carbureter and the operative suction of the engine on the nozzle 10 may be varied to produce desired relative proportions of'air and of hydrocarbon to form an explosive mixture of desired richness.v

With the described construction, it is obvious that theair and hydrocarbon vapors delivered from the carburetor to the engine .will follow a very tortuous path which will result in very effectively vaporizing the hydrocarbon and thoroughly mixing or intermingling the air and hydrocarbon vapor so as to produce a very effective explosive mixture. In the preferable construction shown, also the upper ends of the ports 20 and 21 are located a short distance below the par-` tition 13, wherebyv the momentum of the ,hydrocarbon particles drawn through the nozzlelO by the suction of the engine will cause them to strike the partition 13, thus operating to break up any particles of liquid hydrocarbon andl facilitating vaporization thereof to a material degree.

As shown, the lower end of the carbureter casing forms a yhood which incloses the throttle valve 6 and associated parts and the air admission passageway 3 is formed by a tubular extension 24 of the 'carbureter casing, whereby the carbureter may be inclosed to provide for heating the explosive mixture supplied to the engine, all in a familiar manner. i

As the full equivalent of the partition 13,

of a cylinder 12, which is open from end to end, and closing the upper end of the throttle valve 6. In many applications, also, the

perforated baiile 11 may be dispensed-with without seriously impairing the efficiency of the carbureter.

This modification is shown in Fig. 8 of the drawings, in which`1 designates the valve casing, 2 the mixing chamber, 7 the sleeve supported within sand-mixing chamber, said sleeve being open from end to end, 6 the throttle 'valvey the upper end of which is fitted to the hearing formed bythe bore of said sleeve 7', and the upper end of which is closed as shown at 25. The upper end of the thro'ttlevalve 6f and the bearing sleeve 7 are provided with ports 20 and 21', by

means of which the interior of said throttle' `my invention contemplates equally the use valve may be brought into communication with the mixing chamber 2 all as in' the preferred form of the carbureter.

I claim: l

1. In a carbureter, the combination of a casing provided with a mixing chamber and with a discharge opening therefrom, a hollow throttle valve, sleeves fitted to said throttle valve one of which is positioned within the mixingchamber of said carbureter, and the other outside thereof, a h vdrocarbon supply nozzle which extends into said throttle valve, said throttle valve and the sleeves fitted thereto being provided with ports comprising ports adapted for admitting air to the interior of said throttle valve and separate ports for admitting explosive inixture from said throttle valve to the mixing chamber, said ports forming the sole means for admitting air and explosive mixture to said throttle valve and mixing chamber, respectively, substantially as de# scribed.

2. In a carbureter, the combination of casing provided with a mixing chamber and with a discharge opening therefrom, a hollow throttle valve, a lhydrocarbon supply nozzle which extends into said throttle valve, a hollow member supported Within the mixing chamber, one end of which is secured in' being open and a partition which divides said hollow member transversely between its l ends, the walls of the section of said hollow member adjacent to the disclutrge.openingofl the carburetor being perforated and the portion thereot1 below said partition forming a sleeve lfitted to the-upper end of the throttle i valve, and a sleeve .fitted to said throttle valve outside of said mixing chamber, said throttle valve and sleeves beingl provided with ports comprising ports adapted for admitting air to the interior of said throttle valve, and separate ports for admitting explosive mixture from said throttle valve to the mixing chamber, substantially as described.

3. In a carbureter, the combination of a casing, a partition which divides said casing into upper and lower compartments, said partition being provided with a hole, the upper ot' said compartments forming a mixing chamber and being' provided with a discharge opening, and the lower of said compartments forming a hood and bemg p'rovided with an air admission opening, a sleeve which surrounds the hole in said partition and which extends into the mixing chamber, and a rotatable, hollow valve-member supported within the oarbureter'casing the upper end of which extends into and is fitted to the bore of the sleeve in 'the mixing chamber, and the lower end of which projects into the hood chamber of the carbureter, a hydrocarbon supply nozzle which extends into the lower end of said hollow valve-member, a sleeve fitted to said hollow. valve-member within said hood chamber, the ends of said hollow valve-member being closed in use and said hollow' valve-member and the sleeve in the hood chamber of said carbureter Casin being provided with a port or ports adapted tor admitting air to the interior of said hollow valve-member, and said hollow vvalvemember and the sleeve in said mixing chamber being provided with a port or ports adapted for admitting explosive mixture from said hollow valve-member to said mixing chamber, substantially as described.

il. In a carbureter, the cbmbinationot a easing, a parti-tion which divides said casing into upper and lower compartments, said partition being provided with a hole, the upper of said compartments forming a mixing chamber and being provided witha discharge opening, and the lower of said compartments forminga hood and being provided-with an air 'admission opening, a sleeve which surrounds the hole in said partition and which extends into the mixing chamber, and a rotatable, hollow valve- Amember supported within the carbureter easextends into the lower end of said hollow valve-member, a sleeve adjustably fitted to "said hollow valve-member within said hood chamber, the ends of said hollow valvemember being closed in use and said hollow valve-member and' rthe sleeve in the hood chamber of said carbureter casing being provided with fa port or ports adapted tor admitting air to the interior of said hollow valve-member, and said hollow valveinember and the sleeve in said mixing cha-mber being provided -with a port' or ports adapted for admitting lexplosive mixture from lsaid hollowV valve-member to said .mixing chamber, substantially as described.

5. In a carbureter, the combination of a casing, a partition whichdivides said casing into upper and lower compartments, said partition. being yprovided with' a hole, the upper of said compartments forming a mixing chamber andy being'provided with a discharge opening, yandthe lower of said.com

partments forming'a' hood and being prof sol extends into the-hood chamber of the carl' bui-eter, a hydrocarbon supply nozzle which extends into the lower end of said hollow valve-member, Ja sleeve fitted to said hollow valve-member wit-hin said hood chamber one thereof being provided with a bearing in the lowere'nd wall of the carbureter casing, the ends of said hollow valve-member being closed in use andsaid hollow valvemember and the sleeve in the hood chamber of said carburetor `casing being provided with a port or ports adapted for admitting 'air to the interior of said hollow valve-member, and Said hollow valve-inember and the sleeve in said mixing chamberbeing' provided with a port or ports adapted for admitting explosive mixture from said hollowv valve-member to said mixing chamber, substantially as described.

6. In a carbureter, the combination of a4 casing, a partition which divides said casing into upper and lower compartments, said partition heilig provlded with a hole,.the

upper of'y said compartments forming a mixing chamber and being provided with a discharge opening, and the lower of said compartments forming a hood and being provided with an air admission opening, a sleeve which surrounds `the hole in said partition and which extends into the mixing chamber, and a rotatable, hollow valve-member supported within the carburetcrfcasing the upper end of which extends into and is fitted Y ber `and the Sleeve in to the bore of the sleeve in the mixing ohnmber, and the lower end ofwhieh extends into the hood ehemberof the cerbureter, e hydrocarbonv supply nozzle which extends into the lower end of seid hollow valve-member, a Isleeve rotatably fitted to Said hollow valve-member within seid hood chamber one thereof being provided with a, bearing in the lowerend Wall of the oerbureter easing, the ends of Seid hollow l valve-member being closed in use and said hollow valve-memthe hood chamber of said carburetor easing being provided with a, port or ports adapted for admitting air to the interior of said hollow valve-member, end seid hollow valve-member and the sleeve in Lseid mixing chamber being provided with a port or ports adapted for admitting explosive mixture from seid hollow valvemember to said mixing chamber, and means applied to the -lower ends of said hollow valve-member and of the sleeve in the hood chamber of the carbureter casing for turn-4 CHARLES PQ ABBEY.

Witnesses:

Amon C. J ONES, MARTHA HELPER. 

